How to enable Developer Options/ USB Debugging in Asus Zenfone

Sometimes the Asus Zenfone smartphone is not detected in ADB in USB Debugging mode even after installing all the drivers. This post is for those ASUS Zenfone 5 holders which are facing difficulties while detecting their device in Syncios Data Transfer, Syncios Mobile Manager or in ADT Tools for upgrading firmware, flashing recovery their Zenfone.

This method works for both Kitkat, Lollipop and Marshmallow firmwares. Also, it is risk free and will not brick or bootloop your device.

Step 4 Go back to Settings, Scroll down and navigate to Developer option.

Step 5 Tap on Developer Options and it will open up to give you option to enable USB Debugging.

Tips: On Android 4.0 or 4.1, open Settings > Developer Options, then tick the box for “USB debugging.”
On Android 4.2, open Settings> About Phone> Developer Options, and then check USB debugging.” Then tap OK to approve the setting change.

Recommendation: Zenfone Backup Executor

Syncios Data Transfer - this is a program from the collection of masterpieces from the Avsoft Team, which gave us a program such as Mobile Manager. It supports one-click to backup important mobile contents such as messages, contacts, videos, images, call history and, of course, applications by one-click. Of course, you are able to restore your Zenfone or transfer backup files to new devices whenever you like